Mechanism for use in combination drilling rigs



Feb. 3. 1925'.

l.. H. BACHE Feb, 3. 1925.

. 1,524,903 L. H. BACHE MECHANISM FOR Usz IN COMBINATION DRILLING amsiled June 25, 192s s sheets-sheet 2' gnou do@ Feb. 3.1925. Y 1,524,903

L. H. BACHE MEGHANISM- FOR USE IN COMBINATION DRILLING RIGS Filed June25, 1923 3 Sheets-Sheet 3 Il l l l z@l use in, what is termed in theart, combina- Patented Feb. 3, 1925. 1

LOUIS H. BACHE, 0F TOBRANCE, CALIFORNIA;-

'i 1,524,903 'I UNITI-:n STATES PATEN'I ori-"ics,

HEOHANISM FOBf USE IN.ICOMBINATION DRlLLING RIGS.

'Application inea June 25, 192s. serial No. 641,509. Y

To all 'whom z't may concern.'

Be it known that I, Louis H. Bacini, a citizen of the United States,residing at Torrance, in the county of Los Angeles and State ofCalifornia,have invented a new and useful Mechanism for Use inCombination Drilling Rigs, of which the lfollowing is a specication.,

This invention relates to mechanism for tion drilling rigs, which rigsinclude the equipment for handling cable tools and the equipment forhandling rotary drillingtools so that both equipments may be operatedthrough a common tower or derrick.

Combination rigs have gone into wide use in the drilling of oil wellssince it has been found that certain formations can best be drilled onlywith the cable tools and certain formation or drillin o erations jcan 2oirl? best'be carried out only t ough the use of the rotary drillingtools. Mo-reover, the presence of both types of equipment in the errickpermits reater ease 1n operating either, set of dr' ing tools and alarger safety factor. Thus, in a combination rig, lthere is present boththe -calf wheel of the cable tools and the draw works of the ro- 'taryequipment, 'either of which may be used to raise or lower the casing ordrill pipe and Aupon the breaking down of either the calf wheel ordraw'works the raising or lowering of the casing'or drill pi e may becontinued with the otherreel.

the use of the combination ri 'gives more \casing is passed and t e.sheaves are dis` variety ofs'peeds of raising or owering the drill pipeor casing than can be obtained from either of the equipments separately.

-In such a combination ri the top of the tower has been provided wit acrown block plurality of sheaves from which includingua e for raisinorlowering the av wire posed so that a line may be' taken. from thesheaves in a direction arallel to the reel which is to be emplloye inraisin or lowering4 the'line. It as heretofore een necessary whenshifting from the operation of cable tools to the operation of therotary tools to turn the crown block around on the top ofthe derrick ifthe sheaves are to be aligned with the reel then operating4 the line.This switching around of the crown block necessarily involves a loss ofconsiderable Atime in the drillingrperation -which is frequentlyimportant. us when urther,

either the calf 'wheel or draw works is beingemployed toraise or lowerthe'casing a break down of' theV reel operating mechanism may occur at atime in which the movement of the casing must be continued or the casingwill freeze in the Well.`

- BEISSUED Occaf sionally inthe art a line is run directly toi'apid wearon the bearings, sheave and ering 'the casing or drill pipe whichnicchanism provides a common wire line connection between both the calfwheel and draw works and the vcrown block, so that the line may beoperated from either the cali wheel and draw works while each end of theline is parallel. to the sheave of the crown block' receiving that end,whereby changes from cable tools to rotary tools may be made igithgutthe necessity of adjusting the crown oc Another object of this inventionis to provide a mechanism including a sheave attachment for thecustomary crown blocks now in use, whereby the present combination rigsmay, with a relatively small cost, be

equipped with the'sheave attachment for 'connecting a line to both thecalf wheel and draw works from the crown .block While'maintaining theends of thc line parallel to the sheaves receiving the saine.

Other' ob'eets and advantages of this invention wil be appai'ent'fromthe description hereinafter contained and will present themselves in thepractice ofthe invention.

In the yaccompan 'ing drawings there is illustrated a pre erredembodiment. or method of vembodiment of the invention in which- Figure 1is' an elevation of such parts of a combination rig including theinvention as is necessary tion thereof.

. 2 is a plan View oi the loor of the derrick'. showing the relativeposition of the calf wheel and draw works;

Fig. 3 is a plan view -of the crown block employed in this invention.

Fig'. 4 is an elevation at right angles to to' disclose the opera Fig; 3

' ig. a diagrammatic view of a wire ally indicated at 3.

line connection proper for using the operating mechanism, generallyindicated :1t-2, and the rotary tool mechanism, gener- Such mechanismsgen- I erallyextend from thc well hole, indicated `r at f4," at rightangles to eachl other.

cable tool equipmentl may include a suit- The able prime mover 5 drivinga band wheel 6 through a belt 7 from which the calf wheel 8 may bedriven through a second belt 9. The details of construction of the calfwheel and operating mechanism are Well understood 1n theV art and neednot be further described. lThe rotary tool equipment mayinclude asuitable rotary table -10 driven through a chain or shaft 11 from asecond shaft 12 which shaft is driven from a s econd prime mover (notshown from the drive 13. The draw works o the rotar tool mechanism isillustrated at 14 whic draw Works is employed during the rotary methodof drilling for raising or lowering casing or drill pipefrom a wire linepassing from the top of the derrick 1. p 15 generally indicates thecrown block of this invention which includes the customary water table16 which mountsa pluralit of parallel I-beams 17 which are boltedY orotherwise secured to the table, as indicated at 18, and which I-beams 17support a number of spaced crown block bearings 19 which are dlsposed toreceive. `shafts transverse to the beams 17 2O indicates a numbetweenthe parallel beams 17 and mounted to rotatein parallel planes. Thesheaves are-mounted to rotate on an axis parallel V to the 'axis of thecalr` wheel 8 or are mounted to rotate on an axis parallel .to the .drawworks 14. Preferably, however, the axis of the sheaves 2Q is maintainedparallel to the calf wheel 8.

As shown in the preferred form of the invention, in Fi re 3, six of thesheaves 2O vare included 1n the main group, two in each row, with thecentral row offset or staggered slightly with relation'to the outerrows, in order that the lines from the several sheaves will be somewhatspaced apart and pre-vented from entanglin p 22 `'indicates a sheavedisposed to rotate in a plane at an angle to the remaining sheaves 20,being disposed at preferably 90 to such sheaves 20 and positioned toreceive a line directly from the draw works 14 in a dlreotion parallelto the plane of the sheave 22. For mounting this angled ksheave 22 abeam 23 is provided parallel to .water table b5 the beams 17 and`extending across the l 16. Transverse beams 24 are supported upon the23 and the fissa-,eee l 17 next adjacent the beam 23 and extendtransversely to such beams 17. Said beams 24 'support crown blocklbearings 25 in which 'the sheave 22 is journaled. Referring to Fig. 5the use and operation of the mechanism *is diagra-imnaticallyillustrated. From |the draw works 14 a wire line 26\ asses over theangled sheave 22 from which it extendsdownwardly throu h the derrick andis trained around one of t e sheaves 27 of a. traveling block 28. Fromthe traveling blockv 28 the line 26 is trained around lthe sheaves 20and remaining sheaves 2 7 of the traveling block finally extending fromone of the sheaves 20 to the calf wheel 8 in a direction substantiallyparallel to the plane of said sheaves 20.

By this construction 'the casing or tubin may be supported from thetraveling bloc 28 through a hook 29, or other means, and the travelingblock 28 is supported from the crown block 15 on the wireline 26each endof which Wire line extends to a reel in a plane. substantially -parallelto the sheave from which the end extends, and thus either reel, i. e.,the calfv wheel or draw works, may be employed for raisin or loweringthe line, the other end of theine being the fixed end and in case it isdesired to transfer from one type of drillin tools to the other type ofdrilling too s, 'the line 26, .crown block 15 and traveling block 28 arealready .in position for immediately continuing the operation with sthesecond-type of quipment. In allcases the pull on the line is directed inthe direction in which the least wear upon the line and travelingblockswill take place.

While the .mechanism herein described is well suited for the urposes ofthis invention, it` is not the intention to limit the invention tothespecific embodiment heretofore described butvarious modifications may bemade within the spirit of the inventon. 'Ihis invention is of the scopeset forth in the appended claims.

I'claim: n p.

1. In mechanism of the class described, the combination of a tower, twoindependent line reels mounted to rotate on axesv at a substantial anglewith each other, a crown block on the tower providin a plurality ofrotatable sheav es, one `s 'eave being mounted to rotate on an axissubstantially parallel to one of the reels and` another lll sheave beingmounted to rotate on an axis parallel tof the other reel,-a travelingblock,

and a line extending from? one* reel overthe sheave 'having anaxis-parallel to the axis 4of said reel, supporting said traveling blockfrom thecrown block, and extendinfr v 2. In a combination rig, thecombination 13 of a tower, a traveling block, a calf wheel adjacent thetower, a draw works adjacent the tower and mounted to rotate on an axisat a substantialf angle 'to the axis of the calf Wheel,l a crown blockon the tower havng'a sheave mounted to rotate on lan axis substantiallyparallel to the -axis of the calf wheel and a sheave mounted to rotateon an axis substantially parallel to the draw works, and a lineextending from the calfv 10 wheel over the iSt sheave supporting thetraveling block and extending from the last.

`she'ave to the draw works.

Signed at Torrance, Calif., this 14th day of June 1923.

LOUIS H. BACHE.

